US9522587B2 - Active suspension apparatus for vehicle and pump thereof - Google Patents

Active suspension apparatus for vehicle and pump thereof Download PDF

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Publication number
US9522587B2
US9522587B2 US14/736,137 US201514736137A US9522587B2 US 9522587 B2 US9522587 B2 US 9522587B2 US 201514736137 A US201514736137 A US 201514736137A US 9522587 B2 US9522587 B2 US 9522587B2
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pump
fluid
piston
chamber
actuator
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US20150360530A1 (en
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Gil Joon CHO
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HL Mando Corp
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Mando Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/0408—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics details, e.g. antifreeze for suspension fluid, pumps, retarding means per se
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/021—Spring characteristics, e.g. mechanical springs and mechanical adjusting means the mechanical spring being a coil spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/027—Mechanical springs regulated by fluid means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/027—Mechanical springs regulated by fluid means
    • B60G17/0272—Mechanical springs regulated by fluid means the mechanical spring being a coil spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/033—Spring characteristics, e.g. mechanical springs and mechanical adjusting means characterised by regulating means acting on more than one spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/056—Regulating distributors or valves for hydropneumatic systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/047—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being pin-and-slot mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F16K31/0665—Lift valves with valve member being at least partially ball-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/41—Fluid actuator
    • B60G2202/413—Hydraulic actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/41—Fluid actuator
    • B60G2202/416—Fluid actuator using a pump, e.g. in the line connecting the lower chamber to the upper chamber of the actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
    • B60G2204/81—Interactive suspensions; arrangement affecting more than one suspension unit front and rear unit
    • B60G2204/8102—Interactive suspensions; arrangement affecting more than one suspension unit front and rear unit diagonally arranged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/10—Damping action or damper
    • B60G2500/11—Damping valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/18—Automatic control means
    • B60G2600/182—Active control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
    • F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
    • Y10T74/18576—Reciprocating or oscillating to or from alternating rotary including screw and nut
    • Y10T74/18656—Carriage surrounded, guided, and primarily supported by member other than screw [e.g., linear guide, etc.]

Definitions

  • the present invention relates to an active suspension apparatus for a vehicle and a pump thereof, and more particularly, to an active suspension apparatus for a vehicle that supplies a fluid to an actuator disposed at a wheel of the vehicle using a pump that is driven by a motor and a pump of the active suspension apparatus for the vehicle.
  • Active suspension systems for vehicles are systems that sense various inputs received from a road using a sensor and effectively control a rolling action of a vehicle, using an electric control unit (ECU) based on the sensed inputs.
  • ECU electric control unit
  • an active suspension system for a vehicle includes an actuator that compensates for a displacement of a coil spring connected to a wheel of the vehicle and performs a function of properly controlling the volume of a fluid supplied to the actuator, by sensing rolling and pitching actions of the vehicle so as to maintain a body of the vehicle garage at a constant level so that riding quality and road traction force of the vehicle can be improved.
  • the active suspension system for the vehicle may enable a driver to set a height of the body of the vehicle according to the state of the road through level control of the body of the vehicle or may reduce an air resistance by lowering the body of the vehicle at a high speed, thereby performing a function of improving stability in driving and a fuel consumption ratio.
  • U.S. Pat. No. 6,000,702 discloses technical content which includes a spring and a lift-adjustable regulating unit that is connected to the spring in series and in which a flow rate of a fluid supplied to the lift-adjustable regulating unit is controlled using a proportional control valve.
  • the present invention is directed to an active suspension apparatus for a vehicle that is capable of reducing production cost and simplifying a structure of the active suspension apparatus without employing a high-priced proportional control valve.
  • the present invention is also directed to an active suspension apparatus for a vehicle that is capable of minimizing energy consumption by using a pump based on a motor and a cylinder.
  • an active suspension apparatus for a vehicle including: a pump that adjusts a movement of a fluid; and an actuator in which the fluid is supplied from the pump and which compensates for displacement of a coil spring, wherein the actuator may include first, second, third, and fourth actuators that are disposed at a left front wheel, a left rear wheel, a right front wheel, and a right rear wheel of the vehicle, respectively, and the pump can simultaneously supply the fluid to the first and second actuators or to the third and fourth actuators based on driving of a motor.
  • the pump may include: a first chamber and a second chamber that are formed by partitioning a cylinder in a lengthwise direction of the cylinder; and a first piston and a second piston that are disposed in the first chamber and the second chamber, respectively, and the first piston and the second piston may be moved based on driving of the motor so that the fluid accommodated in the first chamber and the second chamber can be supplied to the actuator.
  • the pump may further include: a first rack bar and a second rack bar that move the first piston and the second piston within the first chamber and the second chamber, respectively; and a pinion that is disposed to engage with the first rack bar and the second rack bar, and when the pinion is rotated based on the motor, the first piston and the second piston may be moved in opposite directions.
  • the active suspension apparatus may further include a deceleration unit that transfers a driving force of the motor to the pinion.
  • the pump may further include a support yoke that supports at least one of the first rack bar and the second rack bar.
  • the fluid accommodated in the first chamber may be supplied to the first actuator and simultaneously, the fluid accommodated in the second chamber may be supplied to the second actuator, or the fluid accommodated in the first chamber may be supplied to the third actuator and simultaneously, the fluid accommodated in the second chamber may be supplied to the fourth actuator.
  • the active suspension apparatus may further include a valve that is disposed on the flow path and controls a flow of the fluid, wherein a flow path in which the fluid is flowable may be formed between the pump and the actuator.
  • a pump of an active suspension apparatus for a vehicle including: a first chamber and a second chamber that are formed by partitioning a cylinder in a lengthwise direction of the cylinder; and a first piston and a second piston that are disposed in the first chamber and the second chamber, respectively, wherein the first piston and the second piston may be moved in opposite directions based on driving of a motor.
  • the pump may further include: a first rack bar and a second rack bar that move the first piston and the second piston within the first chamber and the second chamber, respectively; and a pinion that is disposed to engage with the first rack bar and the second rack bar, and when the pinion is rotated based on the motor, the first piston and the second piston may be moved in opposite directions.
  • the pump may further include a deceleration unit that transfers a driving force of the motor to the pinion.
  • the pump may further include a support yoke that supports at least one of the first rack bar and the second rack bar.
  • FIGS. 1 and 2 are circuit diagrams illustrating an active suspension apparatus for a vehicle according to an embodiment of the present invention
  • FIG. 3 is a view of an internal configuration for describing a combination of elements of a pump of the active suspension apparatus for the vehicle illustrated in FIGS. 1 and 2 ;
  • FIG. 4 is a cross-sectional view for identifying an internal structure of the pump of the active suspension apparatus for the vehicle of FIGS. 1 and 2 ;
  • FIGS. 5 and 6 are circuit diagrams for describing a flow of a fluid according to situations in the active suspension apparatus for the vehicle of FIGS. 1 and 2 .
  • FIGS. 1 and 2 are circuit diagrams illustrating an active suspension apparatus for a vehicle according to an embodiment of the present invention.
  • the active suspension apparatus for the vehicle may largely include a pump 100 , an actuator 200 , a flow path 300 , valves 400 , and a fluid reservoir 500 .
  • the pump 100 is configured to generate a hydraulic pressure in a fluid used in the active suspension apparatus for the vehicle.
  • the pump 100 performs a function of adjusting the movement of the fluid in the active suspension apparatus for the vehicle.
  • the pump 100 is driven using a motor 110 (see FIG. 3 ). Since a pump of an active suspension apparatus for a vehicle according to the related art is a hydraulic pump, is connected to an engine and is always driven, unnecessary pressure is generated.
  • an electric control unit transmits signals to the motor 110 as needed, thereby selectively driving the pump 100 so that the effect of lowering an output of an engine and improving a fuel consumption ratio may be expected.
  • the actuator 200 may include first, second, third, and fourth actuators 210 , 220 , 230 , and 240 that are disposed at a left front wheel, a left rear wheel, a right front wheel, and a right rear wheel of the vehicle, respectively.
  • the first, second, third, and fourth actuators 210 , 220 , 230 , and 240 are connected to coil springs 211 , 221 , 231 , and 241 and dampers 212 , 222 , 232 , and 242 .
  • the first, second, third, and fourth actuators 210 , 220 , 230 , and 240 perform a function of compensating for displacements of the coil springs 211 , 221 , 231 , and 241 .
  • the pump 100 may simultaneously supply the fluid to the first actuator 210 and the second actuator 220 or the third actuator 230 and the fourth actuator 240 based on driving of the motor 110 . That is, the fluid may be simultaneously supplied to front and rear actuators of a left wheel of the vehicle or to front and rear actuators of a right wheel of the vehicle by driving the pump 100 .
  • the flow path 300 is a path for movement of the fluid between the pump 100 , the actuator 200 , or the fluid reservoir 500 .
  • the flow path 300 formed between the pump 100 and the first actuator 210 may be classified into a part 1 - 1 flow path 311 that is connected directly to the pump 100 , and a part 1 - 2 flow path 312 and a part 1 - 3 flow path 313 that diverge from the part 1 - 1 flow path 311 , as illustrated in FIG. 2 .
  • the part 1 - 2 flow path 312 is a flow path connected to the first actuator 210
  • the part 1 - 3 flow path 313 is a flow path connected to the fluid reservoir 500 .
  • a flow path that is connected to the pump 100 and the second actuator 220 and a flow path that is connected to the third actuator 230 and the fourth actuator 240 may also be subdivided, as illustrated in FIG. 2 , like the flow path formed between the pump 100 and the first actuator 210 . A detailed description thereof will be omitted.
  • the valves 400 are disposed on the flow path 300 and perform a function of controlling flow of the fluid.
  • the active suspension apparatus for the vehicle according to an embodiment of the present invention employs an on/off valve instead of a proportional control valve and controls an operation of the on/off valve using the ECU, thereby selectively controlling the movement of the fluid.
  • the fluid reservoir 500 performs a function of accommodating and storing the excessive fluid. Also, if the actuator 200 requires a supply at a larger flow rate, the fluid reservoir 500 performs a function of supplying the fluid to each actuator 200 or the pump 100 .
  • FIG. 3 is a combined view of an internal configuration for describing a combination of elements of a pump of the active suspension apparatus for the vehicle illustrated in FIGS. 1 and 2
  • FIG. 4 is a cross-sectional view for identifying an internal structure of the pump of the active suspension apparatus for the vehicle of FIGS. 1 and 2 .
  • the pump 100 of the active suspension apparatus for the vehicle includes elements, such as a first piston 141 , a second piston 142 , a first rack bar 151 , a second rack bar 152 , and a pinion 160 , as illustrated in FIGS. 3 and 4 .
  • a cylinder 120 is formed in the pump 100 of the active suspension apparatus for the vehicle according to an embodiment of the present invention, and a first chamber 131 and a second chamber 132 are formed by partitioning the cylinder 120 in a lengthwise direction of the cylinder 120 .
  • the first piston 141 and the second piston 142 are disposed in the first chamber 131 and the second chamber 132 , respectively.
  • the first piston 141 and the second piston 142 are moved, i.e., make a reciprocating motion, based on driving of the motor 110 .
  • the first piston 141 and the second piston 142 supply the fluid accommodated in the first chamber 131 and the second chamber 132 to the actuator 200 .
  • the motor 110 may be formed integrally with the pump 100 or may be separably disposed.
  • the first rack bar 151 and the second rack bar 152 each having one side in which a sawtooth-shaped groove is formed, support the first piston 141 and the second piston 142 , respectively, and the pinion 160 is disposed to engage with the groove formed in one side of each of the first rack bar 151 and the second rack bar 152 . If the pinion 160 is connected to the motor 110 and is rotated by the motor 110 , the first rack bar 151 and the second rack bar 152 are moved in opposite directions. Consequently, the first piston 141 and the second piston 142 are moved in opposite directions due to movements of the first rack bar 151 and the second rack bar 152 .
  • the fluid can be simultaneously supplied to the plurality of actuators 200 .
  • a capacity of the pump needs to be increased.
  • the plurality of actuators 200 may be simultaneously controlled without increasing the output of the motor 110 .
  • the pump 100 of the active suspension apparatus for the vehicle may further include a deceleration unit that transmits a driving force of the motor 110 to the pinion 160 .
  • a deceleration unit that transmits a driving force of the motor 110 to the pinion 160 .
  • the pump 100 includes a warm gear 180 and a warm wheel 190 as the deceleration unit and the motor 110 rotates the warm gear 180
  • the warm wheel 190 disposed to engage with the warm gear 180 is rotated so that the pinion 160 may be rotated.
  • a deceleration ratio may be increased, and a load of the motor 110 is reduced so that the efficiency of the motor 110 may be increased.
  • the pump 100 of the active suspension apparatus for the vehicle may further include a support yoke 170 that supports at least one of the first rack bar 151 and the second rack bar 152 .
  • the support yoke 170 is configured to prevent a gap between the first rack bar 151 or the second rack bar 152 and the pinion 160 from occurring.
  • a malfunction may be prevented from occurring due to abrasion of the groove formed on the first rack bar 151 or the second rack bar 152 or abrasion of a shape of the pinion 160 corresponding to the groove.
  • rattle noise caused by formation of the gap may be prevented.
  • FIGS. 5 and 6 are circuit diagrams for describing a flow of a fluid according to situations in the active suspension apparatus for the vehicle of FIGS. 1 and 2 .
  • the ECU controls operations of the motor 110 of the pump 100 and the valves 400 based on road information received from a sensor of the vehicle or a user's settings.
  • the ECU rotates the pinion 160 either clockwise or counterclockwise so as to move the first rack bar 151 in a left direction and simultaneously move the second rack bar 152 in a right direction. Due to the movements of the first rack bar 151 and the second rack bar 152 , the first piston 141 is moved to the left, and the second piston 142 is moved to the right.
  • the fluid accommodated in the first chamber 131 is transferred to the first actuator 210 via the part 1 - 1 flow path 311 and the part 1 - 2 flow path 312 .
  • a part 1 - 1 valve 411 and a part 1 - 2 valve 412 are disposed on the part 1 - 1 flow path 311 and the part 1 - 2 flow path 312 , respectively, and the ECU opens the part 1 - 1 valve 411 and the part 1 - 2 valve 412 in such a way that the fluid may be smoothly moved through the part 1 - 1 flow path 311 and the part 1 - 2 flow path 312 .
  • the ECU opens a part 1 - 3 valve 413 that controls opening/closing of the part 1 - 3 flow path 313 , thereby moving part of the excessive fluid to the fluid reservoir 500 .
  • the fluid accommodated in the second chamber 132 is transferred to the second actuator 220 via a part 2 - 1 flow path 321 and a part 2 - 2 flow path 322 .
  • a part 2 - 1 valve 421 and a part 2 - 2 valve 422 are disposed on the part 2 - 1 flow path 321 and the part 2 - 2 flow path 322 , respectively, and the ECU opens the part 2 - 1 valve 421 and the part 2 - 2 valve 422 in such a way that the fluid may be smoothly moved through the part 2 - 1 flow path 321 and the part 2 - 2 flow path 322 . Also, if it is determined that the quantity of the fluid that flows into the second actuator 220 is excessive, the ECU opens a part 2 - 3 valve 423 that controls opening/closing of a part 2 - 3 flow path 323 , thereby moving part of the excessive fluid to the fluid reservoir 500 .
  • the ECU controls the motor 110 , the first valves 411 , 412 , and 413 and the second valves 421 , 422 , and 423 that are disposed on the first flow paths 311 , 312 , and 313 and the second flow paths 321 , 322 , and 323 , respectively, so that the fluid may be simultaneously supplied by one pump 100 to the first actuator 210 and the second actuator 220 that are actuators of the left wheel of the vehicle. Furthermore, any one among the part 1 - 1 valve 411 , the part 1 - 2 valve 412 , the part 2 - 1 valve 421 , and the part 2 - 2 valve 422 is closed so that any one of the first actuator 210 and the second actuator 220 may be independently controlled.
  • the ECU controls operations of the motor 110 of the pump 100 and the valves 400 based on road information received from the sensor of the vehicle or user's settings.
  • the ECU rotates the pinion 160 in the other side direction so as to move the first rack bar 151 in the right direction and simultaneously move the second rack bar 152 in the left direction. Due to the movements of the first rack bar 151 and the second rack bar 152 , the first piston 141 is moved to the right, and the second piston 142 is moved to the left.
  • the fluid accommodated in the first chamber 131 is transferred to the third actuator 230 via a part 3 - 1 flow path 331 and a part 3 - 2 flow path 332 .
  • a part 3 - 1 valve 431 and a part 3 - 2 valve 432 are disposed on the part 3 - 1 flow path 331 and the part 3 - 2 flow path 332 , respectively, and the ECU opens the part 3 - 1 valve 431 and the part 3 - 2 valve 432 so that the fluid may be smoothly moved through the part 3 - 1 flow path 331 and the part 3 - 2 flow path 332 .
  • the ECU opens a part 3 - 3 valve 433 that controls opening/closing of a part 3 - 3 flow path 333 , thereby moving part of the excessive fluid to the fluid reservoir 500 .
  • the fluid accommodated in the second chamber 132 is transferred to the fourth actuator 240 via a part 4 - 1 flow path 341 and a part 4 - 2 flow path 342 .
  • a part 4 - 1 valve 441 and a part 4 - 2 valve 442 are disposed on the part 4 - 1 flow path 341 and the part 4 - 2 flow path 342 , respectively, and the ECU opens a part 4 - 1 valve 441 and a part 4 - 2 valve 442 so that the fluid may be smoothly moved through the part 4 - 1 flow path 341 and the part 4 - 2 flow path 342 . Also, if it is determined that the quantity of the fluid that flows into the fourth actuator 240 is excessive, the ECU opens a part 4 - 3 valve 443 that controls opening/closing of a part 4 - 3 flow path 343 , thereby moving part of the excessive fluid to the fluid reservoir 500 .
  • the ECU controls the motor 110 , the third valves 431 , 432 , and 433 and the fourth valves 441 , 442 , and 443 that are disposed on the third flow paths 331 , 332 , and 333 and the fourth flow paths 341 , 342 , and 343 , respectively, so that the fluid may be simultaneously supplied to the third actuator 230 and the fourth actuator 240 .
  • any one among the part 3 - 1 valve 431 , the part 3 - 2 valve 432 , the part 4 - 1 valve 441 , and the part 4 - 2 valve 442 is closed so that any one of the third actuator 230 and the fourth actuator 240 may be independently controlled.
  • a pump of an active suspension apparatus for a vehicle includes a first chamber 131 and a second chamber 133 that are formed by partitioning a cylinder 120 formed in the pump in a lengthwise direction of the cylinder 120 , and a first piston 141 and a second piston 142 that are disposed in the first chamber 131 and the second chamber 132 , respectively, and the first piston 141 and the second piston 142 are moved in opposite directions based on driving of the motor 110 .
  • the pump further includes a first rack bar 151 and a second rack bar 152 that move the first piston 141 and the second piston 142 within the first chamber 131 and the second chamber 132 , respectively, and a pinion 160 that is disposed to engage with the first rack bar 151 and the second rack bar 152 . If the motor 110 rotates the pinion 160 , the first piston 141 and the second piston 142 are moved in opposite directions.
  • the pump may further include a support yoke 170 that supports at least one of the first rack bar 151 and the second rack bar 152 .
  • the pump may further include a deceleration unit that transfers a driving force of the motor 110 to the pinion 160 .
  • an active suspension apparatus for a vehicle is implemented using a motor and cylinder-based pump, and a motor is driven only if it is required by a system to be driven, so as to operate the pump so that only a necessary pressure can be generated at an appropriate time and an output of an engine and a fuel consumption ratio can be improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vehicle Body Suspensions (AREA)
US14/736,137 2014-06-11 2015-06-10 Active suspension apparatus for vehicle and pump thereof Active US9522587B2 (en)

Applications Claiming Priority (2)

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KR10-2014-0071082 2014-06-11
KR1020140071082A KR101989061B1 (ko) 2014-06-11 2014-06-11 차량용 액티브 서스펜션 장치

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US20150360530A1 US20150360530A1 (en) 2015-12-17
US9522587B2 true US9522587B2 (en) 2016-12-20

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KR (1) KR101989061B1 (ko)
CN (1) CN105196824B (ko)
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WO2020214666A1 (en) * 2019-04-15 2020-10-22 Tenneco Automotive Operating Company Inc. Suspension system with multiple working modes

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KR102032450B1 (ko) 2014-10-22 2019-10-21 주식회사 만도 차량용 액티브 서스펜션 장치
KR102336958B1 (ko) 2015-07-08 2021-12-09 주식회사 만도 액티브 서스펜션 장치에 적용되는 양방향 선형 펌프의 원점 설정 방법
KR101712355B1 (ko) * 2016-09-27 2017-03-06 (주)건일엠이씨 특정 공간형 화재 조기 진압장치
WO2019021491A1 (ja) * 2017-07-28 2019-01-31 株式会社ショ－ワ 車高調整装置
CN110329031B (zh) * 2019-06-06 2022-03-04 中国北方车辆研究所 一种可实现大角度旋转调节的摇臂悬架
KR20210029394A (ko) 2019-09-06 2021-03-16 가리사니 주식회사 승차감 가변식 전자식 서스펜션 제어 시스템 및 그 방법
CN111594420A (zh) * 2020-06-03 2020-08-28 嘉善边锋机械股份有限公司 一种兼顾吸力和扬程的隔膜泵
CN114352669A (zh) * 2021-12-23 2022-04-15 中联重科股份有限公司 油气悬挂系统及其刚柔性控制阀和工程车辆

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DE102015007481B4 (de) 2019-02-14
KR101989061B1 (ko) 2019-06-13
CN105196824B (zh) 2018-04-20
DE102015007481A1 (de) 2015-12-17
KR20150142823A (ko) 2015-12-23
CN105196824A (zh) 2015-12-30
US20150360530A1 (en) 2015-12-17

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